Nakajima Type 91

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Type 91
Type	Fighter
Manufacturer	Nakajima
Introduced	1931
Retired	1937
Status	out of service
Primary user	Imperial Japanese Army
Produced	1931-1934
Number built	420

The Nakajima Type 91 was a Japanese fighter of the 1930s. It was a single-engine, single-seat parasol monoplane with a fixed, tailwheel undercarriage.

Contents 1 Development 2 Operational history 3 Variants 4 Aircraft markings 5 Specifications (Type 91-1) 6 References 7 External links 8 Related content

[edit] Development

Deisgned in response to an Army requirement of 1927^[1] The Type 91 was developed from the NC series of fighter prototypes. The prototype was the sixth machine under that designation but was a fundamentally distinct airframe design. Compared to the earlier NC, the Type 91 had a smaller wing, relocated fuel tank and wing bracing struts, Townend ring-type cowling, new design tail and undercarriage.^[2] It first flew in 1931.

[edit] Operational history

The Army ordered the new aircraft as the Type 91 and the first deliveries took place late in 1931. However, issues arose with both directional stability and centre of gravity, with the result that the type was delayed entering service.

Between 1931 and 1934, 420 aircraft were constructed (including 100 by Ishikawajima; 23 of the total were Type 91-2, powered by a 432-kW (580-hp) Nakajima Kotobuki 2 radial. This version first flew in July 1934.

The Type was supplanted in service by the Kawasaki Type 95 in 1936-7.

[edit] Variants

[edit] Aircraft markings

[edit] Specifications (Type 91-1)

Data from ^[2]

General characteristics

• Crew: 1
• Length: 7.26 m (23 ft 9.75 in)
• Wingspan: 11.00 m (36 ft 1 in)
• Height: 2.79 m (9 ft 1.8 in)
• Wing area: 20.0 m² (215.28 ft²)
• Empty weight: 1,075 kg (2,370 lb)
• Loaded weight: 1,530 kg (3,373 lb)
• Useful load: kg (kg)
• Max takeoff weight: kg (lb)
• Powerplant: 1× Bristol Jupiter VII 9-cylinder radial, kW (520 hp)

Performance

• Never exceed speed: km/h (knots, mph)
• Maximum speed: 300 km/h (knots, 186 mph)
• Cruise speed: km/h (knots, mph)
• Stall speed: km/h (knots, mph)
• Range: km (nm, mi)
• Service ceiling: m (ft)
• Rate of climb: m/s (ft/min)
• Wing loading: kg/m² (lb/ft²)
• Power/mass: W/kg (hp/lb)
• Time to 3,000 ft (9,845 ft): 4.0 min
• Endurance: 2 hrs

[edit] References

1. ^ [Virtual Aircraft Museum http://avia.ltd.ee/air/japan/nakajima-91.php].
2. ^ ^{a b} Green, William. The Complete Book of Fighters. 

[edit] External links

[edit] Related content